I've just been sent this interesting link:
"So if it's so straightforward, why are there so many forums full of dissatisfied patients? Why do we at Trust Me get so many emails about this subject?
One of the issues with the blood tests is that there are no standard international reference ranges. In the UK, for example, we set the bar rather higher than many other countries. Certainly Dr Toft thinks that current UK guidelines are sometimes interpreted too rigidly."
MIchael Mosely's 'Trust Me I'm a Doctor' - tonight on BBC2 - 8.00 pm.